fix(#2): address PR review — use row mapper, require id==0, drop ignoreCase on amount, doc drift, orphan-category note

app/src/main/java/dev/achmad/ledgerr/domain/expense/interactor/GetExpenseSummary.kt

@@ -17,6 +17,9 @@ class GetExpenseSummary(
         )
         val totalAmount = expenses.sumOf { it.amount }
         val categoryMap = categoryDao.getAll().associate { it.id to it.toModel() }
+        // ForeignKey.RESTRICT keeps categories intact, but be defensive: if a
+        // category was deleted out-of-band, drop its group from byCategory
+        // rather than crashing. totalAmount still includes the orphan rows.
         val byCategory = expenses
             .groupBy { it.categoryId }
             .mapNotNull { (categoryId, group) ->

app/src/main/java/dev/achmad/ledgerr/domain/expense/interactor/GetExpenses.kt

@@ -2,6 +2,7 @@ package dev.achmad.ledgerr.domain.expense.interactor
 
 import dev.achmad.ledgerr.data.local.dao.CategoryDao
 import dev.achmad.ledgerr.data.local.dao.ExpenseDao
+import dev.achmad.ledgerr.data.local.dao.ExpenseWithCategoryRow
 import dev.achmad.ledgerr.data.local.mapper.toModel
 import dev.achmad.ledgerr.domain.expense.model.DateRange
 import dev.achmad.ledgerr.domain.expense.model.ExpenseWithCategory
@@ -24,10 +25,10 @@ class GetExpenses(
     suspend fun awaitOne(id: Long): ExpenseWithCategory? {
         val expense = dao.getById(id) ?: return null
         val category = categoryDao.getById(expense.categoryId) ?: return null
-        return ExpenseWithCategory(
-            expense = expense.toModel(),
-            category = category.toModel(),
-        )
+        return ExpenseWithCategoryRow(
+            expense = expense,
+            category = category,
+        ).toModel()
     }
 
     suspend fun awaitAll(
@@ -46,7 +47,7 @@ class GetExpenses(
                 val amountStr = entity.amount.toString()
                 val categoryName = categoryMap[entity.categoryId]?.name.orEmpty()
                 note.contains(query, ignoreCase = true) ||
-                    amountStr.contains(query, ignoreCase = true) ||
+                    amountStr.contains(query) ||
                     categoryName.contains(query, ignoreCase = true)
             }
             .mapNotNull { entity ->

app/src/main/java/dev/achmad/ledgerr/domain/expense/interactor/InsertExpenses.kt

@@ -9,6 +9,9 @@ class InsertExpenses(
 ) {
     suspend fun awaitAll(expenses: List<Expense>) {
         if (expenses.isEmpty()) return
+        require(expenses.all { it.id == 0L }) {
+            "InsertExpenses.awaitAll requires all Expense.id == 0L (got ${expenses.filter { it.id != 0L }.map { it.id }})"
+        }
         dao.insertAll(expenses.map { it.toEntity() })
     }
 }